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SCAN TV On Astra 3B at 23.5°E New Biss Key 2023

SCAN TV On Astra 3B at 23.5°E New Biss Key 2023

Slow-scan television (SSTV) is a picture transmission method, used mainly by amateur radio operators, to transmit and receive static pictures via radio in monochrome or color.

SCAN TV On Astra 3B at 23.5°E New Biss Key 2023

Last Update 04-12-2022

Astra 3B at 23.5°E
SCAN TV
11512 V 3600
DVB-S2
New Biss Key : 11 11 11 33 11 11 11 33

A literal term for SSTV is narrowband television. Analog broadcast television requires at least 6 MHz wide channels, because it transmits 25 or 30 picture frames per second (see ITU analog broadcast standards), but SSTV usually only takes up to a maximum of 3 kHz of bandwidth. It is a much slower method of still picture transmission, usually taking from about eight seconds to a couple of minutes, depending on the mode used, to transmit one image frame.

Since SSTV systems operate on voice frequencies, amateurs use it on shortwave (also known as HF by amateur radio operators), VHF and UHF radio.
The concept of SSTV was introduced by Copthorne Macdonald[1] in 1957–58.[2] He developed the first SSTV system using an electrostatic monitor and a vidicon tube. It was deemed sufficient to use 120 lines and about 120 pixels per line to transmit a black-and-white still picture within a 3 kHz telephone channel. First live tests were performed on the 11-meter ham band – which was later given to the CB service in the US. In the 1970s, two forms of paper printout receivers were invented by hams.

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